Topographic migration of 2D and 3D ground-penetrating radar data considering variable velocities
Topographic migration of 2D and 3D ground-penetrating radar data considering variable velocities
复制标题
考虑变速的 2D 和 3D 探地雷达数据的地形偏移
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
U. Böniger
中科院分区：
文献类型：
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作者：
N. Allroggen;J. Tronicke;Marcel Delock;U. Böniger
我们提出了一个二维/三维地形偏移计划的探地雷达（GPR）数据，它是能够占可变的速度，通过使用均方根（rms）速度近似。我们使用合成2D示例测试我们的偏移方案，并将我们的偏移图像与使用常见的探地雷达偏移方法获得的结果进行比较。此外，我们将其应用到2D和3D现场数据。这些例子是记录在共同的地下设置，包括表面地形和变化的GPR地下速度场所造成的浅地下水位。在这样的领域设置，我们的偏移策略提供了很好的聚焦图像的共偏移距GPR数据，而不需要一个详细的层速度模型。合成和现场的例子表明，我们的地形偏移方案允许准确的GPR成像，
表面地形和地下速度变化的存在。
We present a 2D/3D topographic migration scheme for ground-penetrating radar (GPR) data which is able to account for variable velocities by using the root mean square (rms) velocity approximation. We test our migration scheme using a synthetic 2D example and compare our migrated image to the results obtained using common GPR migration approaches. Furthermore, we apply it to 2D and 3D field data. These examples are recorded across common subsurface settings including surface topography and variations in the GPR subsurface velocity field caused by a shallow ground water table. In such field settings, our migration strategy provides well focused images of commonoffset GPR data without the need for a detailed interval velocity model. The synthetic and field examples demonstrate that our topographic migration scheme allows for accurate GPR imaging in
the presence of variations in surface topography and subsurface velocity.